Hey guys, I just picked up HO upper and lower intakes and factory 87-93 shorty headers. I'm trying to go back to stock and take off all this GT40 stuff but I don't want to pull my GT40 3 bar heads if I don't have to... do any of y'all run GT40 heads and the stock stuff, or ever heard of someone doing so?
I'm going for reliability and gas mileage, so the GT40 stuff just isn't working out with the stock ECM and AOD. Constant header problems, every 10,000 miles they start leaking again. It's slow off the line, overheats in the summer with the A/C on, and is a gas hog. I liked it better when it was HO factory matched components. Anyone else feel this way after installing the GT40 stuff or am I nuts?
I have already replaced the engine harness, MAP, IACV, TPS, COIL, Distributor, ICM, plugs/wires/cap/rotor, EGR valve, EVR solenoid, tried 3 different ECMS, ran seafoam and gas treatments, checked the timing, checked for vacuum leaks, checked fuel pressure, checked grounds, new battery, etc etc.
I just think this car needs a standalone ECM and a tune and a 3000 stall to feel right. I definitely wanted to do those when I was younger, but now I just want my old girl reliable and torquey!
I'm going for reliability and gas mileage, so the GT40 stuff just isn't working out with the stock ECM and AOD. Constant header problems, every 10,000 miles they start leaking again. It's slow off the line, overheats in the summer with the A/C on, and is a gas hog. I liked it better when it was HO factory matched components. Anyone else feel this way after installing the GT40 stuff or am I nuts?
I have already replaced the engine harness, MAP, IACV, TPS, COIL, Distributor, ICM, plugs/wires/cap/rotor, EGR valve, EVR solenoid, tried 3 different ECMS, ran seafoam and gas treatments, checked the timing, checked for vacuum leaks, checked fuel pressure, checked grounds, new battery, etc etc.
I just think this car needs a standalone ECM and a tune and a 3000 stall to feel right. I definitely wanted to do those when I was younger, but now I just want my old girl reliable and torquey!
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